Valve mechanism.



J. C. ROMICK, Jn.

VALVE MEOHANISM. ArPLIoATIoH FILED MAY a1. 1791i.

'1,045,441 Patented' Nov. 26,' 1912 i y applicatie-@62'LFWSL C. Romoli, Jn,

1 @Wit-12011 fthillnited States, and-.residing .at-i'l'raer, `county' of Tama and State of Iowa, have-invented .certain new and use; ul Improv'einfents' i'niValve Mechanism, of

valve1Tmechanism.I or compound engines,

A11.obje'ctofjtlieyinventionJ is to provide af valine` Inecliani'snrxfor compound engines eitherofthe one cylinder or. multiple cylin` der type: and employed with a peculiar' ernl gineienstruetion :which utilizes yin a lowv y pressure@chamber-thefsteamfrom the high "pressure rchamber before reaching the engineV exhaust".

ctis to' provide a slide valve inf-eonnection--witha high and low pressure chamber: soconstructed that -'the steam actfrom-L all sides renders the -same a balfree-s movement thereof.-

" "5' l" Azrstill'furtherobject is to provide a slide 'Valvef'for' controllingV in one position the .entrance of flivefsteam at Vone slde of the high pressurelpis'to-n 'and conduct the steam '1 .romthefother side thereof to a low presconnections al different .positioning of the o.tl1er s" that l will. appear as the nature of the ihventionis better understood, the same Vcon- ,3.5

"sists :zin the novel combination' and -arrange- 'ment' of parts hereinafter fully described,

i illustrated lin the accompanying drawings, 'Tand-pointed outin the appended claims.

.2L I In the vdrawings forming a part of the .applicationfandin which like designating v'nl lmerals refer to corresponding' parts 4 througliout the several viewsz-Figure 1 is a central -Verticallongitudinal sectional view of the device showing a slide valve in one position,` `Fig.' 2 is a similar view showing vthe slide Valvegin'its extreme opposite position,4 and, :Fig 3 is a vertical transverse the slide yvalve kReferring in detail to the drawings, and in whichbut one cylinder 9 is shown while any number desired may be employed, the high pressure chamber 10, it 1s noted, 1s similar and of less diameter than the low pressure chamber 11, said chambers being providedrespectively with accurately litted i.' *Jorrit4 nonnen, '13 @mmm-710W@ 1;

y Specicati'nof vLetters Patent.

' rvALv iunonna-rusia.`

atentar-Nev. as', i912.

191% v'Stiefel 1510;mosca,` p l tosaid cylinder? and connected thereto by 0' "the housinglOO isthe valve casing 15 tubu-` lar .inform with the' terminal-heads 16 inclosing a likewise tubular longitudinallyv v`movable slide valve 17 rigidly-,mounted upon the actuating valverod 18, the latter pass- 65 :ing through the stuffing boxes 19 centrally v positioned in each head.. i Y A steam chest, not 'shown,'coinmunicates with the live steam chamber 20 and through lthe operation of the slide valve in connec- 70 tion With the chamber passages 24 and 25- of the housing, said live steam is alternately conducted to the high pressure chamber -1`0 "l lat opposite sides ofa high pressurepiston '12 'and operates to actuate said piston there- 75 in. The exhaust chamber 21 within said, u housing. communicating with an exhaust outlet not shown is given communication through ports 22 and 23 with the -low pres-` sure cylinder 1 1 and alternately upoh op- 80 posite sides-of the low pressure piston 13 therein through the actuation of said slide -valve and whereby the partially spent steam so conducted from the high pressure chamber, operates for further influencing the 85 actuation of the piston rod and piston.

' Within the casingl the lining thereof 26` is provided with openings respectively y'alining with the passage 2 4, chamber 20, 'passage 25, 22, chamber -21 and passage 23, 90 said openings being through the bottom of said lining while similar openings are provided through the top thereof in`connection with Ithe annular flanges 27 communicating with the passages 24C, 25, 22"and 23 and thel'95 further annular passages 28 communicating `with the ,chambers and 21. i

The tubular valvemember 17 is provided with exterior packing rings 29 positioned at'each end lthereof whilev at intermediate 10o points similar packingrings 30 are employed spaced apart and positioning the openings 31 therebetween to the interior of the valve. Between said packing rings the exterior of the valve is also' cut-away form- 105 ing together withthe packing rings annular `passages 32, 33 and 34 'around the valve when the same is operatively positioned in the-casing- Besides the annular openings 31 to the interior of the valve, each end of 110 the latter has. a substantially semi-circular .opening 35 thereipi noted that the valve rod 18 is reciprocate in an opposite direction to the piston rod 14, the direction of movement of the motive iuid may be traced in Fig. 1 by the arrows when the valve is at the extreme left hand position. From the live steam chamber 20 thesame 4passes to the passage 24 through the adjacent annular space 32 and thereby communicates with the high pressure cham.- ber 10 at the rear of its piston 12, thus .forcing the same outwardly as indicated. Said movement of the high pressure piston forces f the partially exhausted steam at the outer end 4of that chamber through the passage 25 and the annular space 33 and opening 31- to the interior.l chamber36 of the valve and from whence it ,is conducted through the end opening'35 and the passage 23 to.

-the rear end of the low compression chamber and in a position' to operate behind'the low pressure piston 13, thus assisting to move the same and the piston rod 14 outwardly. This described movement of the low pressure piston 13 forces the exhaust steam which is ahead of the same outwardly through the passage 22, and the annular passage 34 into the exhaust chamber 21 and from whence it is communicated to the atmosphere. The pistons having thereupon assumed their outermost positions and the slide valve its extreme right hand position as shown in Fig. 2 of the drawings, the passage of the motive fluid under these conditions is also readily traced. The live steam chamber 20 communicating through the passage 25 ahead of the high pressure piston 12 in its cylinder'lO tends to force the same inwardly and expel the partially exhausted steam rearwardly thereof through the passage 24, the valve end passage 35 and thence through the valve chamber 36 4and its outlet passages 31 and the annular passage 33 to the passage 22 and into the low pressure chamber 11 in front of its piston 13. Such action forcing the low pressure piston inwardly exhausts the spent gases through the passage23 and the annular passage 34 of the valve to-the exhaust chamber 21 and from whence such gases finally reach the atmosphere.

From this description, the operation of the slide valve in affording communication for thel partially exhausted motive fluid from opposite sides of the piston to the alternating sides of the low pressure piston and thence to the atmoshigh pressure,

phere, .will be apparent as well as the resultant 1n accomplishing constant uniform impulses atv corresponding sides of both pistons.

While the forms of the invention herein "shown and described are'what are'believed to be preferable embodiments thereof, it is nevertheless 4to be understood that minor changes may be made-in proportion', form, size or details of construction without departing from the spirit and scope of the in,-

vention as set forth in the appended claims.

What I- claim as new and desire to secure by Letters Patent of the United States is 1. A valve mechanism comprising a valve casing, said 'casing having passagesthere through, a tubular reciprocating valve in said casing, packing rings spaced apart and exteriorly. arranged upon said valve forming annular passages therearound and said ,valve having perforations there@y adaptedl for allowing a passing of luidtherethrough.

2. A valve mechanism comprising a housing, a valve casing mounted upon said housing, said housing and casing having continuous passages communicating with the interior of said housing, said housing also having a live steam chamber and an exhaust steam chamber, each communicating with the interior of said casing, a tubularl reciprocating valve in said casing, packing rings spaced apartand exteriorly arranged upon said valve formino annular passages therearound and said 'va ve having perforations therein-adaptedfor allowing a' passing o fiuid therethrough to said passages.

3. A valve mechanism comprising a housing, a valve casing mounted upon said hous ing, said housing and casing -having passages communicating with the interior of said casing, said housing also. having'a live steam chamber and an exhaust steam chamber, each 'communicating with the interior of said casing, a tubular-reciprocating valve in said casing, packing rings spaced apart and exteriorly arranged uponv said valve" forming annular passages therearound and said valve having perforations therein adapted for allowing a passage of iuid therethrough. Y

In testimony whereof I athx jmy signature in ypresence of two witnesses.

JOHN c/aoMIcK,4 Ja.l

Witnesses BENNETT R. STOAKES, LEE E. NICHLEss. 

